Nut-slotting device



F. A. SCHROEDER.

NUT SLOTTING DEVICE.

APPLICATION FILED APR. 7, 1921.

I ,431 ,G9 Y IPatanted Oct. III), 1922.

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F. A. SCHROEDER.'

NUT SLOTTING DEVICE.

APPLICATION FYILED APR. 1. 192x.

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APPLICATION FlLED APR. 7., 1921.

Patented Octu 10, w22.

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i y Dian, a citizen of the United States, and ares r l ting Devices, of `which the `following lisa Be it lmownlthat l, F minimiert A. Sermonident ofthe-city ofChicago, in the county or Cook and State of illinois, have invented Vanewand useful lmprovementin` Nut-Slotclaimed. 1 l

Anuobject of my invention is to provide full, clear, and exact description.`

nut `.slotting deviceshmd being primarily de signed for the inaking of castle nuts, and it consists in the combinations, constructions and arrangements herein described and adevice which will greatly reduce the cost ofmalring castle nuts.

" provide a nut slottingdevice which maybe chine for this purpose.

A. further object of my invention is to provide a nut slotting device which will obviate` the necessity ofthe use of a milling ma- Lli further object of my invention isto used inconnection with any power-driven punchpress, the slotting operation being aca complished by `a single stroke in which the y metalis punched out.

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"A'rurther "bject of my invention is to provide a device oit the type described in which a plurality of nuts may be operated on at one stroke, and in which the `nuts Aare automatically turned between I successive strokes to permit of `a rapid and accurate' operation. i y

A further 'object of my invention isto provide a device of the type described which will facilitate the placing oi the nuts inpositionto be punched, and which Vwill permit themfto be removed quickly after the punchngoperatin- I y `@their objects' and advantages will appear inthe following specification, and thenovel features ofthe invention will be particularly? pointed out in theappendedclaims.

My invention is illustrated in theaccompanying drawings, forming part or this application, in which p.

Figure 1 is a side view showiiiginyinvention as applied to a punch press,`

y 501 Figure 2 is 'a front view of the device,

Figure 3 isa face view of the lower or stationary part of they device,

Figure 4L is a side elevation of the partl shown in Figure 2,

Figure 5 is a. shown in Figure 3 Fig re 6 `is a section along the line 6'-i y of Figure 3, Myxinvention relates to improvements in Figure 7 is a section along the line 7-7 of Figure 5, 60

Figure 8 is a section through one of the movable punch carrying members,

Figure 9 is a plan view of a modified form of the device, l i

along the line 10-10 of Figure\9and Y `Figure 11 is a detail plan view of a portion of the mechanism shown in Figure 9.

ln carrying out myinvention, I make use of an ordinary powerdriven punch 70 press. In Figure 1 a portion of this `press is shown at 10.' To this portion is secured stationary holding members 11 which are spaced apart to permit the entrance of the base 12 of the nut slotting device proper. 75

r1`he base is secured between the members 11 in any suitable manner, as, for instance, by one or more setscrews 13. rThis base, as will be seen from the drawings, is provided with arecess lll `(see Figure 1)V arranged to 80 receive a die plate 15 which is secured `to the base V12 by screws 16. This die plate 15 has a plurality of openings 17 arranged to register with correspondingopenings 18 in the base 12, for a purpose hereinafter eX- 85 plained y Communicating with the openings 1 7 are `small slots 19 which constitute portions offemale die members.

edge of the slots 19 the die plate is formed with an arc-shaped seat which isl arranged 90 to receive the cylindrical extension 20 of the nuts 21-which are being slotted.`

The die plate 15 has a loiigitudinalslot 22 arranged toreceive a cam plate or bar 23 which is secured in position by screws 24;; 95

The base 12has "an upstanding `integral portionl 25, having a vertically extending longitudinal slot 25X, in which is disposed a vertically slidablefcarrier `plate 26, end

`bearing strips 27 and retainer plates 28 be- 100 planview of the parts F igure'lO is an enlarged sectional view 65 At the `upper Fing provided, as shown in Figure 5. The

upright portion 25, in that form of the device shown in Figures 5 and 6, is provided with vertical bores 29 arranged to receive a pair of springs, such as that shown at 30 in Figures 6 and 7. The carrier plate 26 is provided withpins 3l which extend through slots 32' (see rigure 7 and are engaged by the springs 31. The latter tend to maintain the carrier 26 in upper position, butthe carrier may be moved' downwardly against the tension of the springs, as will be explained later. The carrier 26 is provided with a plurality of pins or arms for supporting the nuts which are to be slotted. In Figure 6 I have shown one of these pins in detail. lt lconsists of a body portion 33 which lits in abore in the carrier,`being secured iny f position by means of a set screw 34. An enlarged portion 35 forms abacking or stop portion against which the nut 21 may rest, a reduced portion 3,6 of the pin being provided to vreceive the nut which is merely slipped over theA reduced portion. The end of the reduced portion 36 is slotted, as shown at 37, so as to permit the entrance of the punch or cutter. v ,s

As will be seen from the drawings, l have vprovided a plate 3S which is mounted above the 'nut holding means, and which has slots 39 inclined `slightly to the horizontal, bolts l() being provided which extend through the retainer plate 28 and the'upright Q5 to the rear of the latter, ynuts ll being carried by the bolts forseeuring them in position. The

plate 3S slides on these bolts 410. Normally the plate 36 isin the position shown in Figure 3. In this position the lower' edge of the plate rests on the tops of the row of nuts. This keeps 'the nuts in alinement until they are being slotted or punched. It will be observed, however, that there are extensionsv 38X between adjacent nuts which engage the corners of the nuts to turn them when the plate is moved from right to left in Figure 3 by the mechanism described later. It will also be observed that in order for the plate to move from right to left in Figure 3, it is necessary that the plate be raised from the nuts slightly, this action being due to the angular relation of the slots 39.

Coacting with the parts thus far described is an upper portion, having a spindle l2 ar- 1,431,eeo

that when the punch press chuck el?) is raised, in the normal operation of the punch press, it will raise the body portion Il5 with it, and carry upwardly the cam plate Ll-tl. lVhcu the pin or roller engages the inclined surface 5l of the cam plate, it will force the slidable plate 3S from right to left in Figure 2, and when the punch press takes a downward stroke, the cam surface 52 will engage the roller or pin 50 to force the plate 38 in the opposite direction.

As will be seen from Figures i and Q, the body portion Ll5 of the upper n'iovable member is provided with a series of recesses 53, each receiving a punch carrying arm 5l, these arms being` journaled on a common pivot shaft which extends longitudinally of the body portion and through the recess 53. To each arm is secured a spring, such as that shown atv 56 in Figure l, the outer end of the spring being secured by means of a nut 57 to a downwardly extending slotted plate 58, which is fastened to the body portion l5 by means of bolts 59 that. project through slots 6() in the plate 5S, so as to permitl the latter to be adjusted if desired. The springs 56 normally keep the arms 5,4: in the position shown in Fi gare l. Flach of the arms 54e is provided with a recess ar anged to receive a punch or cutter 61, which is cured in position by means of a set screw 62. By unloosenin the set screw, the punch or cutter 6l may be removed for replacement by a new punch, or for any other purpose. To facilitate the removal of the punch. an opening 63 is provided in the arm 5l, into which a tool may be inserted, so that the punch may be driven out.

Pivotally secured at 6l on the lu-aclret 65, attached to the upright of the lower stationary portion of the nut, slotting device, is a lever 66, through which a rod 67 loosely extends. Above the lever 66 is a spring 66 which bears on the upper portion of the lever at one end and on a shoulder on the rod at the other end. Below the lever are nuts 69 which adjust the position of the lever with respect to the rod. The upper end of the rod extends through an opening 7 0 in an arm 7l which is carried by the chuck 43 ot the punch press. The arm 7l is designed to engage a head 72 on the rod 67 when the punch press is in its upper position, i. c., that shown in Figure l. This will pull upwardly on the rod 67 and cause the free end of the lever to push downwardly on the. carrier Q6, thus moving the nut bearing pins 36 downwardly, so as to free the nuts from the plate 37, thereby permitting the rapid removal or replacement of the nuts.

From the foregoing description of the varions parts of the device., the operation thereof may be readily understood. lVhen the device is in the position shown in Figure l, a plurality of nuts is slipped on the nut carrying pins 36, and power is applied to the i press. As the chuck'43 descends, the arm 71 goes with it andreleases the lever 66, so that the carrier 26, which is pressed on by the lever, is now forced upwardly so as to bring the upper edges of the nuts against the lower edge of the plate 38 (see Figure 3). Further movement `oi the punch `press will cause the guide rods 73 carried by the upright portion 25 to enter bores 74 inthe bodyportion 45, thus guiding the Lipper member in its movement. `When the lower outer beveled ends of the arms 54 engage the cam plate 23, the arms 54 will be swung inwardly against the tension oit' the spring 56, and the punch 6l will enter the slots 37 just above the lower portion of the ring-like extension 20 of the castle nuts. The punch portions, on Yfurther movement, willengage these lower ring portions,fand will force the nuts downwardly against the tension or' the springs 30, until the nutsareseated 1n the recesses or seats 76 (see F lgures l, 4 and 5.). Further movement or the vpunch will cause it to punch or cut aportion of thetubular extension 20 of the nut, the punch passing into the slot of the die 19. It will be observed that in the downward movement of the body portion 45, and the cam plate 48 which is `carried with it, the cam surface 52 willengage the pin or roller 50 on the plate 38, and torce it to the right in Figure 2. This is easily accom-L plished, because the nuts, as has been explained, have been carried downwardly, and the plate is free to move.

i. On the reverse movement of the punch press, the punches pass out, and when the cam plate 23 iscleared, the arms 54 are swung outwardly by the springs 56 `into the position shown in Figure l. On the continued upward movement ot the punch press, the cam surface 5l of the cam member 48 engages the roller 59 and moves the plate 38 from right to left in Figures 2 and 3. The extensions 38X of the plate will engage the nuts and will turn them one-sixth oia revolution (il hexagonal nuts are used), thusbringing the nuts in position to have another cut taken from the tubular extension 20. The action is continued until the rim or tubular extension has been cut or punched all around to form the castle or slotted nuts. When this is done, and the punch press is in its upper position, the carrier 26 is pressed downwardlyby the lever 66, as explained, and thenuts may be removed, and others which are to be operated on may be replaced on the nut receiving pins 36.

`In the form of the device just` described,

he nuts which are being operated on are mounted on a common carrier. i Occasionally, however, one nut may be a little larger than another one, and this may throw an unequal strain on the carrier. obviate any difficulty arising from `such con- In order to dition, I may provide individual carriers, such as those shown at 80, 8l, 82,and 83 in Figure 9. In this form oiz the device, the body portion 25 is provided with a bore 84 i'or each carrier. The latter has an eX- tension, suc-h as that shown at 31X in Figure l0, which enters the bore, and which engages the spring 30x. The carriers 30, 8l, 92 and 33 are individually operated, so that even if the nuts should vary in diameter, it would not threw a strain on the mechanism. In this form oi' the device the rod 67 simultaneously actuates a plurality of levers 66X, there being one of these levers for each carrier, so that when the `punch press 'is in its highest position, the outer end oi? all of the levers moves downwardly, thus forcing the individual carriers downwardly and releasing the nuts carried thereby from the plate 38. i

The device constructed as disclosed permits the `rapid slotting ot the nuts, since eachslot is made by one operation, that vis to say, one stroke of the punch press. Furthermore, the turning of the nuts automatically obviates the necessity of their being turnedmanually, which is necessary in the milling machine. punched and not cut also permits a rapidity oi operation which is not attainable with the ordinary milling machine,

l'. claim:

l. A nut slotting machine comprising a stationary body portion, means for supporting a nut on said body portion, a reciprocating member, a punch pivotally carried by said reciprocating member,`and means actuated by the movement oi: the reciprocating member for causing the punch to engage the nut.

2. A. nut slotting `machine comprising a stationary body portion, means for yieldingly supporting a nut on said body portion, a .die carried by the body portion and arranged to receive the nut, a reciprocating member, a punch pivotally carried by said reciprocating member, and means actuated by the movement of said reciprocating member for causing the punch to engage the nut and to force it down upon said die. 3. A nut slotting machine comprising a stationary body portion, means for supporting a nut on said body portion, a reciproeating member, a punch pivotallyv carried by said reciprocating member, n'ieans 'actuated by the movement oi said reciprocating member for causing the punch to engage the nut for slotting the latter, and means for automatically turning the nut to a different position at each stroke oi' the reciprocating member.

4, A nut slotting machine comprising a stationary body portion, means for support- `ing a plurality of nuts on said body portion,

a reciprocatingmember, a plurality of punches pivotally carried by said reciprocatingmember, and means actuated by the movement ot the reciprocating member for causing said punches simultaneously to cngage their respective nuts and to slot the latter.

5. A nut slotting machine comprising a stationary body portion, a spring pressed movable carrier mounted on said body portion, means lor supporting a nut on said movable carrier, a reciprocating member, an arm pivotally mounted on said reciprocating member, a punch carried by said arm, and a stationary cam member arranged to be engaged by the arm 'to swing the arm and to bring the punch into engagement with the nut for slotting the latter.

6. A nut slotting machine comprising a stationary body portion, a spring pressed movable carrier mounted on said body portion, means for supporting` a nut on said movable carrier, a reciprocating member` an arm pivotally mounted on said reciprocating member, a punch carried by said arm, a stationary cam member arranged to be engaged by the arm to swing the arm and to bring the punch into engagement with the nut 'tor slotting the latter, and mea-ns Jfor automatically turning the nut at each strobe ot the reciprocating member.

7. A nut slot-ting machine comprising a stationary body portion, spring pressed movable means tor supporting a plurality ot nuts on said body portion, a seat disposed below each nut and arranged to receive its respective nut, a reciprocating member, a plurality of arms pivotally mounted on the reciprocating member, a punch carried by each arm, a cam member arranged. to be engaged by allot the arms to swing the latter toward the nuts, each et said punches being arranged to engage its individual nut and to torce it on said seat during a portion of a stroke o'li the reciprocating member, and toslot the nut-during the remaining` portion of the stroke.

8. A nut slotting machine comprising a stationary body portion, spring pressed movable means for supporting a plurality oit nuts on said body portion, a seat disposed below each nut and arranged to receive its re spective nut, a reciprocating member, a'plurality ot arms pivotally reciprocating member, a punch carried by each arm, a cam member arranged to be engaged by all oi? the arms to swing the latter toward the nuts, each ol; said punches being arranged to engage its individual nut and to force it on said seat during a portion of a stroke of vthe reciprocating member, and to slot the nut during the remaining portion of the stroke, and means tor automatically alining the nuts prior to their engagement by the punches.

9. A nut slotting machine comprising a mounted on thestationary body portion, spring pressed movable means tor supporting a plurality of nuts on said body portion, a seat disposed below each nut and arranged to receive its respective nut, a reciprocating member, a plurality or arms pivotally mounted on the reciprocating member, a punch carried by each arm, a fam member arranged to be, engaged by all oi" the arms to swing the latter toward the nuts, each oi said punches being arranged to engage its individual nut and to torce it on said seat during a portion o'l' a stroke ot the reciprocating member, and to slot the nut during the renmining portion of the stroke, means Vfor automatically alining the nuts prior to their engagement;v by the punches, and tor rotating the nuts on their axes vto a new position between each slotting operation.

l0. ln a nut slotting device, a stationary body portion. spring pressed means for supporting a plurality oi nuts on said body portion, a longitudinally movable bar Vfor initially holding the nuts in alinement, and means carried by the bar vtor turningl the nuts a portion ot a revolution when the bar is moved longitudinally.

ll. ln a nut slotting device, u stationary body portieri, spring pressed means tor supporting a plurality ot nuts on said body portion, a longitudinally movable bar tor initially holding the nuts in alinement, means carried by the bar for turning the nuts a portion olf a revolution when the bar is moved longitudinally, a reciprocating member, and means carried by said reciproating member tor moving' said bar at each reciprocation.

ln a nut slotting device, a stationary body portion, springpressed means 'for supporting a plurality oi nuts on said body portion, a longitudinally movable bar i'or initially holding the nuts in alinen'ient., means carried by the bar 'for turningthe nuts` :i portion ot a revolution when the bar is moved loi'igitudinally. a reciprocating member, means carried by said reciprocating member tor moving` said bar a' each reciprocation, and a plurality ot punches can ried by said reciprocatingmember and arranged to engage said nuts to slot them.

13, ln a nut slotting device. a stationary body portion, spring pressed means tor supporting a plurality ot nuts on said body portion, a longitudinally movable bar for initially holding the nuts in alinement, means carried by the bar 'for turning the nuts a portion ot a revolution when the bar is moved longitudinally, a reciprocatingir member, means carried by said reciprocatin;r member for moving said bar at each reciprocation, a plurality ot punches carried by said reciprocating member and arranged to engage said nuts to slot them, and means actuated at the endr of the stroke of the reciprocating member for releasing the nnte member, means for simultaneously moving from the engagement with tbealining bar. said spring pressed carriers at the end of 14, A nut slottingr machine comprising :t the stroke of the reciprocating member; and l0 `stationary `body `portion, a plurality of means carried by seid reciprocating member 5 spring pressed slidable carriers mounted on for engaging; the nuts simultaneously to slot said body portion1 means 'for supporting a them. nut on each ofy said carriers, a reciprocating FREDEBCK A. SCHROEDER. 

